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jbe@0
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1 #include <stdlib.h>
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jbe@0
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2 #include <stdio.h>
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jbe@0
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3 #include <string.h>
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jbe@532
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4 #include <stdint.h>
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jbe@0
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5 #include <libpq-fe.h>
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jbe@0
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6
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jbe@532
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7 #define exec_sql_error(message) do { \
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jbe@532
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8 fprintf(stderr, message ": %s\n%s", command, PQresultErrorMessage(res)); \
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9 goto exec_sql_error_clear; \
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jbe@532
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10 } while (0)
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jbe@345
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11
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jbe@532
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12 int exec_sql(PGconn *db, PGresult **resptr, int *errptr, int onerow, char *command) {
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jbe@532
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13 int count = 0;
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14 PGresult *res = PQexec(db, command);
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jbe@532
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15 if (!res) {
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jbe@532
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16 fprintf(stderr, "Error in pqlib while sending the following SQL command: %s\n", command);
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jbe@532
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17 goto exec_sql_error_exit;
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jbe@532
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18 }
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jbe@532
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19 if (
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jbe@532
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20 PQresultStatus(res) != PGRES_COMMAND_OK &&
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jbe@532
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21 PQresultStatus(res) != PGRES_TUPLES_OK
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jbe@532
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22 ) exec_sql_error("Error while executing the following SQL command");
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jbe@532
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23 if (resptr) {
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jbe@532
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24 if (PQresultStatus(res) != PGRES_TUPLES_OK) exec_sql_error("The following SQL command returned no result");
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jbe@532
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25 count = PQntuples(res);
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jbe@532
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26 if (count < 0) exec_sql_error("The following SQL command returned too many rows");
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jbe@532
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27 if (onerow) {
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jbe@532
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28 if (count < 1) exec_sql_error("The following SQL command returned less than one row");
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jbe@532
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29 else if (count > 1) exec_sql_error("The following SQL command returned more than one row");
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jbe@532
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30 }
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jbe@532
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31 *resptr = res;
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jbe@532
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32 } else {
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jbe@532
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33 PQclear(res);
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jbe@532
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34 }
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jbe@532
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35 return count;
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jbe@532
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36 exec_sql_error_clear:
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jbe@532
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37 PQclear(res);
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jbe@532
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38 exec_sql_error_exit:
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jbe@532
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39 if (resptr) *resptr = NULL;
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jbe@532
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40 if (errptr) *errptr = 1;
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jbe@532
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41 return -1;
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jbe@345
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42 }
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jbe@345
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43
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jbe@0
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44 int main(int argc, char **argv) {
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jbe@1
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45
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jbe@1
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46 // variable declarations:
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jbe@532
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47 int err = 0; /* set to 1 if any error occured */
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jbe@532
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48 int admission_failed = 0; /* set to 1 if error occurred during admission */
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jbe@0
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49 int i, count;
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jbe@0
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50 char *conninfo;
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jbe@0
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51 PGconn *db;
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jbe@334
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52 PGresult *res;
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jbe@1
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53
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jbe@1
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54 // parse command line:
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jbe@0
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55 if (argc == 0) return 1;
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jbe@0
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56 if (argc == 1 || !strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")) {
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jbe@0
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57 FILE *out;
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jbe@0
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58 out = argc == 1 ? stderr : stdout;
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jbe@362
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59 fprintf(out, "\n");
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jbe@362
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60 fprintf(out, "Usage: %s <conninfo>\n", argv[0]);
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jbe@362
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61 fprintf(out, "\n");
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jbe@362
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62 fprintf(out, "<conninfo> is specified by PostgreSQL's libpq,\n");
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jbe@532
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63 fprintf(out, "see http://www.postgresql.org/docs/9.6/static/libpq-connect.html\n");
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jbe@362
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64 fprintf(out, "\n");
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jbe@362
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65 fprintf(out, "Example: %s dbname=liquid_feedback\n", argv[0]);
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jbe@362
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66 fprintf(out, "\n");
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jbe@0
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67 return argc == 1 ? 1 : 0;
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jbe@0
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68 }
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jbe@0
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69 {
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70 size_t len = 0, seglen;
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71 for (i=1; i<argc; i++) {
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72 seglen = strlen(argv[i]) + 1;
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73 if (seglen >= SIZE_MAX/2 || len >= SIZE_MAX/2) {
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74 fprintf(stderr, "Error: Command line arguments too long\n");
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jbe@532
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75 return 1;
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jbe@532
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76 }
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jbe@532
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77 len += seglen;
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jbe@532
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78 }
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jbe@0
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79 conninfo = malloc(len * sizeof(char));
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jbe@0
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80 if (!conninfo) {
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jbe@0
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81 fprintf(stderr, "Error: Could not allocate memory for conninfo string\n");
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jbe@0
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82 return 1;
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jbe@0
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83 }
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jbe@0
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84 conninfo[0] = 0;
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jbe@0
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85 for (i=1; i<argc; i++) {
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jbe@0
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86 if (i>1) strcat(conninfo, " ");
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jbe@0
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87 strcat(conninfo, argv[i]);
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jbe@0
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88 }
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jbe@0
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89 }
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jbe@1
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90
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jbe@1
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91 // connect to database:
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jbe@0
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92 db = PQconnectdb(conninfo);
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jbe@0
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93 if (!db) {
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jbe@0
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94 fprintf(stderr, "Error: Could not create database handle\n");
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jbe@0
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95 return 1;
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jbe@0
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96 }
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jbe@0
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97 if (PQstatus(db) != CONNECTION_OK) {
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jbe@0
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98 fprintf(stderr, "Could not open connection:\n%s", PQerrorMessage(db));
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jbe@0
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99 return 1;
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jbe@0
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100 }
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jbe@1
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101
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jbe@235
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102 // delete expired sessions:
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jbe@532
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103 exec_sql(db, NULL, &err, 0, "DELETE FROM \"expired_session\"");
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jbe@532
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104
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jbe@532
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105 // delete expired tokens and authorization codes:
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jbe@532
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106 exec_sql(db, NULL, &err, 0, "DELETE FROM \"expired_token\"");
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jbe@532
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107
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jbe@532
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108 // delete expired snapshots:
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109 exec_sql(db, NULL, &err, 0, "DELETE FROM \"expired_snapshot\"");
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jbe@235
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110
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jbe@184
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111 // check member activity:
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jbe@532
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112 exec_sql(db, NULL, &err, 0, "SET TRANSACTION ISOLATION LEVEL READ COMMITTED; SELECT \"check_activity\"()");
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jbe@103
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113
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jbe@4
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114 // calculate member counts:
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jbe@532
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115 exec_sql(db, NULL, &err, 0, "SET TRANSACTION ISOLATION LEVEL REPEATABLE READ; SELECT \"calculate_member_counts\"()");
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jbe@532
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116
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jbe@532
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117 // issue admission:
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118 count = exec_sql(db, &res, &err, 0, "SET TRANSACTION ISOLATION LEVEL READ COMMITTED; SELECT \"id\" FROM \"area_with_unaccepted_issues\"");
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119 if (!res) admission_failed = 1;
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120 else {
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121 char *area_id, *escaped_area_id, *cmd;
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122 PGresult *res2;
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123 for (i=0; i<count; i++) {
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124 area_id = PQgetvalue(res, i, 0);
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125 escaped_area_id = PQescapeLiteral(db, area_id, strlen(area_id));
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126 if (!escaped_area_id) {
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127 fprintf(stderr, "Could not escape literal in memory.\n");
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128 err = admission_failed = 1;
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129 continue;
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130 }
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jbe@532
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131 if (asprintf(&cmd, "SET TRANSACTION ISOLATION LEVEL REPEATABLE READ; SELECT \"take_snapshot\"(NULL, %s)", escaped_area_id) < 0) {
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jbe@532
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132 fprintf(stderr, "Could not prepare query string in memory.\n");
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133 err = admission_failed = 1;
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jbe@532
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134 PQfreemem(escaped_area_id);
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135 continue;
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jbe@532
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136 }
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jbe@532
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137 exec_sql(db, &res2, &err, 1, cmd);
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138 free(cmd);
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139 if (!res2) admission_failed = 1;
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jbe@532
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140 else {
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jbe@532
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141 char *snapshot_id, *escaped_snapshot_id;
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jbe@532
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142 int j, count2;
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jbe@550
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143 snapshot_id = PQgetvalue(res2, 0, 0);
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jbe@532
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144 escaped_snapshot_id = PQescapeLiteral(db, snapshot_id, strlen(snapshot_id));
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jbe@532
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145 PQclear(res2);
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jbe@532
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146 if (!escaped_snapshot_id) {
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jbe@532
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147 fprintf(stderr, "Could not escape literal in memory.\n");
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148 err = admission_failed = 1;
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jbe@532
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149 goto area_admission_cleanup;
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jbe@532
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150 }
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jbe@532
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151 if (asprintf(&cmd, "SET TRANSACTION ISOLATION LEVEL READ COMMITTED; SELECT \"issue_id\" FROM \"snapshot_issue\" WHERE \"snapshot_id\" = %s", escaped_snapshot_id) < 0) {
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jbe@532
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152 fprintf(stderr, "Could not prepare query string in memory.\n");
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jbe@532
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153 err = admission_failed = 1;
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jbe@532
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154 PQfreemem(escaped_snapshot_id);
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jbe@532
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155 goto area_admission_cleanup;
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jbe@532
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156 }
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jbe@532
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157 PQfreemem(escaped_snapshot_id);
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jbe@532
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158 count2 = exec_sql(db, &res2, &err, 0, cmd);
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jbe@532
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159 free(cmd);
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jbe@532
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160 if (!res2) admission_failed = 1;
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161 else {
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jbe@532
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162 char *issue_id, *escaped_issue_id;
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jbe@532
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163 for (j=0; j<count2; j++) {
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164 issue_id = PQgetvalue(res2, j, 0);
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165 escaped_issue_id = PQescapeLiteral(db, issue_id, strlen(issue_id));
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jbe@532
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166 if (!escaped_issue_id) {
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jbe@532
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167 fprintf(stderr, "Could not escape literal in memory.\n");
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jbe@532
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168 err = admission_failed = 1;
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jbe@532
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169 continue;
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jbe@532
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170 }
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jbe@532
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171 if (asprintf(&cmd, "SET TRANSACTION ISOLATION LEVEL READ COMMITTED; SELECT \"finish_snapshot\"(%s)", escaped_issue_id) < 0) {
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jbe@532
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172 fprintf(stderr, "Could not prepare query string in memory.\n");
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jbe@532
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173 err = admission_failed = 1;
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jbe@532
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174 PQfreemem(escaped_issue_id);
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jbe@532
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175 continue;
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jbe@532
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176 }
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jbe@532
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177 PQfreemem(escaped_issue_id);
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jbe@532
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178 if (exec_sql(db, NULL, &err, 0, cmd) < 0) admission_failed = 1;
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jbe@532
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179 free(cmd);
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jbe@532
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180 }
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jbe@532
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181 PQclear(res2);
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jbe@532
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182 }
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jbe@532
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183 if (!admission_failed) {
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jbe@532
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184 if (asprintf(&cmd, "SET TRANSACTION ISOLATION LEVEL READ COMMITTED; SELECT \"issue_admission\"(%s)", escaped_area_id) < 0) {
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jbe@532
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185 fprintf(stderr, "Could not prepare query string in memory.\n");
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jbe@532
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186 err = admission_failed = 1;
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jbe@532
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187 goto area_admission_cleanup;
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jbe@532
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188 }
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jbe@532
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189 }
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jbe@532
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190 while (1) {
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jbe@532
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191 exec_sql(db, &res2, &err, 1, cmd);
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jbe@532
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192 if (!res2) {
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jbe@532
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193 admission_failed = 1;
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jbe@532
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194 break;
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jbe@532
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195 }
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jbe@532
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196 if (PQgetvalue(res2, 0, 0)[0] != 't') {
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jbe@532
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197 PQclear(res2);
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jbe@532
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198 break;
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jbe@532
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199 }
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jbe@532
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200 PQclear(res2);
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jbe@532
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201 }
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jbe@532
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202 }
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jbe@532
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203 area_admission_cleanup:
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jbe@532
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204 PQfreemem(escaped_area_id);
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jbe@532
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205 }
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jbe@334
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206 PQclear(res);
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jbe@4
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207 }
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jbe@4
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208
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jbe@1
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209 // update open issues:
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jbe@532
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210 count = exec_sql(
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jbe@532
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211 db, &res, &err, 0,
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jbe@532
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212 admission_failed ?
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jbe@532
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213 "SELECT \"id\" FROM \"open_issue\" WHERE \"state\" != 'admission'::\"issue_state\"" :
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jbe@532
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214 "SELECT \"id\" FROM \"open_issue\""
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jbe@532
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215 );
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jbe@532
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216 for (i=0; i<count; i++) {
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jbe@532
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217 char *issue_id, *escaped_issue_id;
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jbe@532
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218 PGresult *res2, *old_res2;
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jbe@532
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219 int j;
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jbe@532
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220 issue_id = PQgetvalue(res, i, 0);
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jbe@532
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221 escaped_issue_id = PQescapeLiteral(db, issue_id, strlen(issue_id));
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jbe@532
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222 if (!escaped_issue_id) {
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jbe@532
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223 fprintf(stderr, "Could not escape literal in memory.\n");
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jbe@532
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224 err = 1;
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jbe@532
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225 continue;
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jbe@532
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226 }
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jbe@532
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227 old_res2 = NULL;
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jbe@532
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228 for (j=0; ; j++) {
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jbe@532
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229 if (j >= 20) { // safety to avoid endless loops
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jbe@532
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230 fprintf(stderr, "Function \"check_issue\"(...) returned non-null value too often.\n");
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jbe@357
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231 err = 1;
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jbe@532
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232 if (j > 0) PQclear(old_res2);
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jbe@357
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233 break;
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jbe@357
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234 }
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jbe@532
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235 if (j == 0) {
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jbe@532
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236 char *cmd;
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jbe@532
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237 if (asprintf(&cmd, "SET TRANSACTION ISOLATION LEVEL REPEATABLE READ; SELECT \"check_issue\"(%s, NULL)", escaped_issue_id) < 0) {
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jbe@532
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238 fprintf(stderr, "Could not prepare query string in memory.\n");
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jbe@334
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239 err = 1;
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jbe@334
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240 break;
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jbe@334
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241 }
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jbe@532
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242 exec_sql(db, &res2, &err, 1, cmd);
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jbe@532
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243 free(cmd);
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jbe@532
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244 } else {
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jbe@532
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245 char *persist, *escaped_persist, *cmd;
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jbe@532
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246 persist = PQgetvalue(old_res2, 0, 0);
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jbe@532
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247 escaped_persist = PQescapeLiteral(db, persist, strlen(persist));
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jbe@532
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248 if (!escaped_persist) {
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jbe@532
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249 fprintf(stderr, "Could not escape literal in memory.\n");
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jbe@532
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250 err = 1;
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jbe@532
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251 PQclear(old_res2);
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jbe@532
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252 break;
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jbe@532
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253 }
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jbe@532
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254 if (asprintf(&cmd, "SET TRANSACTION ISOLATION LEVEL REPEATABLE READ; SELECT \"check_issue\"(%s, %s::\"check_issue_persistence\")", escaped_issue_id, escaped_persist) < 0) {
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jbe@532
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255 PQfreemem(escaped_persist);
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jbe@532
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256 fprintf(stderr, "Could not prepare query string in memory.\n");
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jbe@532
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257 err = 1;
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jbe@334
|
258 PQclear(old_res2);
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jbe@532
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259 break;
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jbe@334
|
260 }
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jbe@532
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261 PQfreemem(escaped_persist);
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jbe@532
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262 exec_sql(db, &res2, &err, 1, cmd);
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jbe@532
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263 free(cmd);
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jbe@532
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264 PQclear(old_res2);
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jbe@65
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265 }
|
jbe@532
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266 if (!res2) break;
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jbe@532
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267 if (PQgetisnull(res2, 0, 0)) {
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jbe@532
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268 PQclear(res2);
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jbe@532
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269 break;
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jbe@532
|
270 }
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jbe@532
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271 old_res2 = res2;
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jbe@65
|
272 }
|
jbe@532
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273 PQfreemem(escaped_issue_id);
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jbe@0
|
274 }
|
jbe@532
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275 if (res) PQclear(res);
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jbe@1
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276
|
jbe@375
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277 // cleanup and exit:
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jbe@0
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278 PQfinish(db);
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jbe@65
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279 return err;
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jbe@1
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280
|
jbe@0
|
281 }
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